Patents by Inventor Michael W. Carrell

Michael W. Carrell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Protective system for safe disposition of a hypodermic syringe device
    Patent number: 5066277
    Abstract: A device for protectively sheathing a syringe and hypodermic injection or body fluid withdrawal element, which device includes a tubular sheath having a syringe barrel reciprocably mounted within the tubular sheth for coaxial movement. The barrel carries a plunger for moving a liquid through a spout or tip on one end of the barrel. The sheath, near one of its ends, carries a locking element, and the barrel, adjacent its end through which liquid passes upon reciprocation of the plunger, carries a cooperating locking element which interlocks with that locking element carried by the sheath when the barrel is withdrawn into the sheath to a location where the barrel tip is totally encased and any hypodermic injection or fluid withdrawal element which is carried on the tip of the barrel is protected.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: November 19, 1991
    Assignee: Safe Medical Devices, Inc.
    Inventors: Michael W. Carrell, Stephen H. Gericke
  • Intravenous catheter placement device
    Patent number: 4944728
    Abstract: An intravenous catheter placement device which includes a tubular catheter section concentrically surrounding an elongated tubular needle which has a bias cut point projecting from one end of the catheter section with the bias cut point of the needle being used to lead the catheter section into a blood vessel. A protective sheath subassembly is connected to the needle and to the catheter section to permit the needle to be withdrawn through the tubular catheter section into a protective rigid tubular sheath, leaving the catheter section emplaced in the blood vessel. Locking elements on the protective tubular sheath subassembly lock the needle in the protected position.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: July 31, 1990
    Assignee: Safe Medical Devices, Inc.
    Inventors: Michael W. Carrell, Stephen H. Gericke
  • Protective system for safe disposition of a syringe and hypodermic injection device carried thereon
    Patent number: 4846796
    Abstract: A device for protectively sheathing a syringe and hypodermic injection element, which device includes a tubular sheath having a syringe barrel reciprocably mounted within the tubular sheath for coaxial movement. The barrel carries a plunger for ejecting a liquid from a spout or tip on one end of the barrel. The sheath near one of its ends, carries a locking element, and the barrel, adjacent its end through which liquid is ejected upon reciprocation of the plunger, carries a cooperating locking element which interlocks with that locking element carried by the sheath when the barrel is withdrawn into the sheath to a location where the barrel tip through which liquid is ejected is totally encased and protected within the sheath, as is any hypodermic injection element which is carried on the tip of the barrel.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: July 11, 1989
    Assignee: Rialto Enterprises, Ltd.
    Inventors: Michael W. Carrell, Stephen H. Gericke